BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to an electrical connector, and more particularly to a flappable plug connector used with a receptacle connector.
2. Description of Related Art
U.S. Patent Publication No. 20130095702A1 discloses a dual orientation plug connector, which has a connector tab with first and second major opposing sides and a plurality of electrical contacts carried by the connector tab. The plurality of contacts may include a first set of external contacts formed at the first major side and a second set of external contacts formed at the second major side. The first plurality of contacts may be symmetrically spaced with the second plurality of contacts and the connector tab may be shaped to have 180 degree symmetry so that it can be inserted and operatively coupled to a corresponding receptacle connector in either of two insertion orientations.
A receptacle connector corresponds to the plug connector. A sensing circuit in the receptacle or the electronic device in which the receptacle connector is housed can detect the orientation of the contacts and switch internal connections to the contacts in the connector jack as appropriate. When the contacts are more, the sensing circuit is more complicated, which will waste software switches or hardware switches.
Hence, a new and simple electrical connector is desired.
SUMMARY OF THE INVENTION
Accordingly, the object of the present invention is to provide a flappable plug connector. The electrical connector assembly comprising: a housing unit essentially including a pair of housings each equipped with a plurality of contacts thereof, each of said contacts defining a front contacting section and a rear tail section; a paddle card sandwiched between the pair of housings with circuit pads mechanically and electrically connected to the corresponding rear tail sections, respectively; and a pair of metallic shells enclosing a rear portion of the housing unit but exposing a front portion of the housing unit to cooperate with a front region of the shell to be a mating tongue; wherein the front region of the shell mechanically and electrically connects to a corresponding grounding pad on the paddle card as an EMI (Electromagnetic Interference) touch pad.
Other objects, advantages and novel features of the invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective view of the plug connector and the receptacle connector mating with each other according to a presently first embodiment of the application.
FIG. 2 is a perspective view of plug connector of FIG. 1.
FIG. 3 is an exploded perspective view of the plug connector of FIG. 2.
FIG. 4 to FIG. 8 show successive perspective views of the plug connector of FIG. 2 to illustrate the assembling procedure.
FIG. 9 is a top elevational view of the assembled paddle card and the bottom housing of FIG. 5.
FIG. 10 is a perspective view of the receptacle connector of FIG. 1 and a printed circuit board on which the receptacle connector is mounted.
FIG. 11 is an exploded perspective view of the receptacle connector and the associated printed circuit board of FIG. 10.
FIG. 12A) is a front view of the housing of the receptacle connector of FIG. 7; FIG. 12(B) is a rear view of the housing of the receptacle connector of FIG. 7.
FIG. 13 is a cross-sectional view of the receptacle connector taken along lines 13-13 of FIG. 10.
FIG. 14 is a cross-sectional view of the receptacle connector taken along lines 14-14 of FIG. 10.
FIG. 15 is a cross-sectional view of the receptacle connector taken along lines 15-15 of FIG. 10.
FIG. 16 is a perspective view of the plug connector of another embodiment.
FIG. 17 is a partially exploded perspective view of the plug connector of FIG. 16.
FIG. 18 is an assembled perspective view of the plug connector according to a second embodiment of the present invention.
FIG. 19 is an exploded perspective view of the plug connector of FIG. 18.
FIG. 20(A) is a top view, FIG. 20(B) is a side view of the plug of FIG. 18.
FIG. 21 is an assembled perspective view of the plug connector of FIG. 18 ready for mating with a corresponding receptacle connector mounted upon a printed circuit board.
FIG. 22 is a side cross-sectional view of the mated plug connector and receptacle connector of FIG. 21.
FIG. 23 is an assembled perspective view of the plug connector of another embodiment of the instant invention.
FIG. 24 is an exploded perspective view of the plug connector of FIG. 23.
FIG. 25(A) is a top view, FIG. 25(B) is a side view of the plug connector of FIG. 23.
FIG. 26 is a perspective view of the plug connector and the receptacle connector of another embodiment of the invention, derived from the parent application
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Reference will now be made in detail to the preferred embodiment of the present invention. Referring to FIGS. 1-15 showing a first embodiment including a plug connector 100 connecting with a cable 90 and a receptacle connector 200 mounted on a printed circuit board 91, the plug connector 100 is flappable in two direction and used with the receptacle connector 200.
Referring to FIGS. 2-3, the plug connector 100 include a mating tongue 102 of which two surfaces is embedded with blade contacts 141 and an EMI touch pad 151 projecting from an overmolded cover 17.
Referring to FIG. 3, the plug connector includes a paddle card 11 with circuit pads 111, 112 on two opposite surfaces, and a housing unit including a pair of identical housings 13 commonly sandwiching the paddle card 12 therebetween. Each of the housings 13 is equipped with a plurality of contacts 14 therein via an insert molding process. A pair of Vbus or power contacts 18 are located by two opposite lateral sides of the paddle card 11 and each sandwiched between the paddle card 11 and the housing 13. The power contacts 18 are stamped and formed from a carrier strip. The pair of housings 13 with the internal paddle card 11 and the associated power contacts 18 and contacts 14 are formed as a sub-assembly 101 as shown in FIG. 7. Opposite first shell 15 and second shell 16 are assembled together to commonly sandwich the aforementioned sub-assembly 101 therein. Each shell 15, 16 includes an EMI touch pad 151, 161 located behind contacting sections 141 of the contacts 14 as shown in FIG. 8. The front portions of the housings 13 form a mating tongue 102 with the contacting sections 141 and the touch pads 151, 161 exposed to an exterior thereon. An overmolded cover 17 is applied upon exterior surfaces of the shells 15 and 16, and the cable 90 is mechanically and electrically connected to the paddle card 11 and extends rearward out of the overmolded cover 17.
The assembling steps include: (Step 1 as shown in FIG. 4) inserting the power contacts 18 into one/lower the housing 13 via the engaging tab 181 of the power contact 18 received in the hole 131 in the housing 16; (Step 2 as shown in FIG. 5) inserting the paddle card 11 into the housing 13, the paddle card is surrounding by the power contacts 19; (Step 3 as shown in FIGS. 5 and 6) assembling the other/upper housing 13 to the lower housing 13 with key structures 132 coupled with each other to form a sub-assembly 101; (Step 4 as shown in FIG. 7) assembling the sub-assembly 101 to the second shell 16; (Step 5 as shown in FIG. 8) assembling the first shell 15 to the second shell 16; (Step 6 as shown in FIG. 8) securing the first shell 15 and the second shell 16 together via protruding tabs 161 on the second shell 16 received in the corresponding holes 151 in the shell 15; (Step 7) bending the tab 162 of the second shell 16 against the shell 15; (Step 8) assembling the cable 90 to the paddle card 11 and secured by the shells 15, 16 and overmolded within the overmolded cover 17. Notably, the contacting sections 141 and the touch pad 151, 161 are both exposed to an exterior in front of the overmolded cover 17. After step 3 and before step 4, all the contacts 14 and the power contacts 18 are soldered to the paddle card 11 via an IR reflow wherein the contacts 14 are soldered to the circuit pads 111, and the notch structure 182 of the power contacts 18 are soldered to the notch structures 113 of the paddle card 11. The power contact 18 includes a recessed region 183 exposed to an exterior through an opening 133 formed in a boundary of the assembled housings 13 wherein the recessed region 183 is substantially a so-called complete pass-thru rather than a blind pocket and is deflectable for coupling to the corresponding power contact of the complementary receptacle connector as shown in FIG. 7.
Referring to FIGS. 10-15, the plug connector 100 is mateable with the complementary receptacle connector 200 mounted upon the mother board 91. The receptacle connector 200 includes an insulative housing 21 defining a receiving cavity 201 to receive the mating tongue 101 of the housings 13. Two rows of contacts 22 deflectable in the vertical direction, are disposed in the corresponding passageways 211 of the housing 21 and by opposite two upper and lower sides of the receiving cavity 201 for mating with the contacts 14 of the plug connector 100. Each of the contacts 22 includes a front mating section 221 for mating with the contacts 14 of the plug connector 100, a tail section 222 for mounting to the mother board 91, and a retention section 223 therebewteen for retaining the contact 22 in the housing 21. A pair of power contacts 28 deflectable in the lateral direction, are located in the housing 21 and by opposite two lateral sides of the receiving cavity 201 for mating with the power contacts 18 of the plug connector 100. Each of the power contacts 28 includes a front contacting section 281 for receivable engagement within the recessed region 183 of the power contact 18 (labeled in FIG. 6) of the plug connector 100, and a rear tail section 282 for mounting to the mother board 91, and therebetween an intermediate section 283 laterally offset from the front contacting section 281 and the rear tail section 282. The housing 21 forms a plurality of recesses 213, 214 corresponding the contacts 22 and the power contacts 28 for allowing outward deflection of such contacts 22 and power contacts 28, respectively. The housing 21 further defines a space S outwardly beside the intermediate section 283 so as to forgive outward deflection of the intermediate section 283.
The receptacle connector 200 further includes a metallic shell 23 enclosing the housing 21 with a plurality of legs 231 extend downwardly beyond a bottom face of the shell for mounting to the mother board 91, and a plurality of spring tangs 232 extending around a front edge of the shell for electrically and mechanically contacting the touch pads 151, 161 of the plug connector 100. Optionally, a metallic shielding plate 24 is received in a receiving slot 216 in the housing 21 between two rows of contacts 24. The selected passageways 217 receiving the grounding contacts, extend to reach receiving slot 216 so as to allow the spring tag 241 of the shielding plate 24 to extend therethrough for contacting the grounding contacts. It is noted that the shielding plate 24 is inserted into the receiving slot 216 rearwardly via the receiving cavity 201. In some arrangement, the connector have one lane SS+ only and chooses the same row SS+ as inter-connection path.
In another embodiment, as shown in FIGS. 16 and 17, the plug connector may have the corresponding power contacts 18′ expanded to replace the side portion of the housing 13 including the anti-mismating rib structure 181′. Understandably, in this embodiment the power contacts 18′ is not deflectable but stiff.
FIGS. 18-22 essentially disclose a plug connector 300 of a second embodiment of this invention. Referring to FIGS. 18-21, the plug connector 300 includes a paddle card 31 with front circuit pads 311 and rear circuit pads 312 thereon and a U-shaped power clip 32 surrounding a front edge and two side edges. An upper insulative housing 33 is located upon an upper face of the paddle card 31 with associated upper contacts 331, and a lower insulative housing 34 is located under the paddle card 31 with associated lower contacts 341, wherein the upper contacts 331 and the lower contacts 341 define corresponding front contacting sections exposed to an exterior and rear mounting sections mounted to the corresponding front circuit pads 31, respectively. Upper and lower metallic shells 35 are assembled together to enclose the paddle card 31 and the upper housing 33 and the lower housing 34 therein. An insulative cover 36 is overmolded upon the shells 35 and a cable 37 which encloses a plurality of wires 371 having front ends mechanically and electrically connected to the rear circuit pads 312. Each shell 35 includes a bumps 351 for enhancement during mating with a deflectable tang 41 of the receptacle connector 400 as shown in FIGS. 21 and 22.
FIGS. 23-25 show the different type plug connector 500 having the front circuit pads 51 exposed to exterior for mating with the contacts of the receptacle connector and the upper and lower housings are no longer equipped with the corresponding upper and lower contacts in comparison with the embodiment shown in FIGS. 18-22. FIG. 26 discloses the embodiment derived from the first embodiment of the parent application.
It is to be understood, however, that even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with details of the structure and function of the invention, the disclosure is illustrative only, and changes may be made in detail, especially in matters of shape, size, and arrangement of parts within the principles of the invention to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Patent Grant
9525223
